Propeller positioning device

ABSTRACT

A propeller positioning device comprises a table mount comprising a base member of substantially cylindrical configuration having an under surface substantially perpendicular to the axis thereof and an upper surface transverse to the axis thereof. A table has a substantially planar upper surface, an under surface and a substantially cylindrical support member coaxially affixed to the under surface thereof and having a substantially planar under surface transverse to the axis thereof. A rotating device rotatably mounts the support member on the base member in a manner whereby the under surface of the support member rests on the upper surface of the base member and the support member is rotatable about an axis of rotation perpendicular to the under surface of the support member and the upper surface of the base member so that the table assumes different inclinations corresponding to the rotation of the support member on the base member. A spindle for accommodating a propeller is affixed to the upper surface of the table and extends perpendicularly therefrom and coaxially with the support member.

I Umted States Patent 1 1 1111 3,773,312 Victorino 1 Nov. 20, 1973PROPELLER POSITIONING DEVICE Primary Examiner0thell M. Simpson [75]Inventor: Frank Victorino, Lakewood, Calif. Assistant ExamfnerjoephZatarga Attorney-Damel Jay Tlck [73] Assignee: The Raymond LeeOrganization,

Inc., New York, N.Y. [57] ABSTRACT [22 Filed; July 14 1972 A propellerpositioning device comprises a table mount comprising a base member ofsubstantially cy- [21] Appl. No.. 271,748 lindrical configuration havingan under surface substantially perpendicular to the axis thereof and an52 US. (:1 269/50, 269/52, 269/76 pp Surface transverse to the axisthereof- A table [51 Int. Cl B23q 1/04, B23q 1/12 has a SubstantiallyPlanar pp surface, an under [58 Field 0f Search 269/76, 47, 50, 52, faceand a Substantially Cylindrical pp member 2 9 74 75 81, 33; 29 15 3 p557 553 coaxially affixed to the under surface thereof and having asubstantially planar under surface transverse to [5 References Cited theaxis thereof. A rotating device rotatably mounts UNITED STATES PATENTSthe support member on the base member in a manner 7 whereby the undersurface of the support member ggg g $23 rests on the upper surface ofthe base member and the 3576070 4/19. 29/558 support member is rotatableabout an axis of rotation 3:257:108 6/1966 /47 X perpendicular to theunder surface of the support 1,791,781 2/1931 Wilson 269 52 x member andthe upper Surface of the base member 80 3,056,369 10/1962 Roth 269/50 Xthat the table assumes different inclinations corre- 372,714 11/1887Shaw.... 269/101 X sponding to the rotation of the support member on the1,579,582 4/1926 Voltz 269/76 X base member. A spindle for accommodatinga propel- Muller Ct X ler is affixed to the upper urface of the and ex-FOREIGN PATENTS OR APPLICATIONS tends, perpendicularly therefrom andcoaxially with 912,307 4/1946 France 269/58 the Support membe" 4 Claims,2 Drawing Figures I h 1 25 l 23 I 1 I 1 lg 1 PAIENTEDrmvzo ms 'iillPROPELLER POSITIONING DEVICE DESCRIPTION OF THE INVENTION The presentinvention relates to a propeller positioning device.

The principal object of the invention is to provide a propellerpositioning device of simple structure for positioning a propeller, asdesired, to facilitate work on the propeller, which device is efficient,effective and reliable in operation.

In order that the invention may be readily carried into effect, it willnow be described with reference to the accompanying drawing, wherein:

FIG. 1 is a schematic diagram, partly in section, of an embodiment ofthe propeller positioning device of the invention; and

FIG. 2 is a schematic diagram of the embodiment of FIG. 1 of thepropeller positioning device of the invention at a desired angularinclination.

In the FIGS., the same components are identified by the same referencenumerals.

The propeller positioning device of the invention comprises a tablemount 1 comprising a base member 2 of substantially frustoconicalconfiguration having an under surface 3 substantially perpendicular tothe axis 4 thereof and an upper surface 5 transverse to said axis.

A table 6 has a substantially planar upper surface 7, an under surface 8and a substantially frustoconical support member 9 coaxially affixed tothe under surface thereof and having a substantially planar undersurface 10 transverse to the axis 11 thereof.

A rotating device rotatably mounts the support member 9 on the basemember 2 in a manner whereby the under surface 10 of the support memberrests on the upper surface 5 of the base member. The support member 9 isrotatable about an axis of rotation 12 perpendicular to the undersurface 10 of the support member and the upper surface 5 of the basemember 2. Thus, the table 6 assumes different angular inclinations 13(FIG. 2) corresponding to the rotation of the support member 9 on thebase member 2.

The upper surface 5 of the base member 2 is at the same angle with itsunder surface 3 as the under surface 10 of the support member 9 is withthe upper surface 7 of the support member.

The base member 2 has an internally threaded pin bore 14 formed therein.The rotating device comprises a bore 15 formed in the base member 2 andextending from the upper surface 5 thereof coaxial with the axis ofrotation 12. The pin bore 14 opens into the bore 15. A substantiallycylindrical extension 16 extends from the under surface 10 of thesupport member 9 coaxially with the axis of rotation 12. The extension16 is rotatably seated in the bore 15 of the base member 2.

The extension 16' has a circular circumferential groove 17 formedtherein. An externally threaded pin member 18 is threadedly coupled inthe pin bore 14 of the base member 2. The pin member 18 abuts theextension 16 in the groove 17 formed therein for holding the table 6 ina desired angular position.

A spindle 19 for accommodating a propeller is affixed to the uppersurface 7 of the table 6 and extends perpendicularly therefrom andcoaxially with the support member 9. Propeller accommodating means includes a first substantially frustoconical annular member 20 (FIG. 1)coaxially positioned around the base 21 of the spindle 19. A tubularmember 22 (FIG. 1) is coaxially positioned around the spindle l9 andrests on the first annular member 20. A second substantially positionedaround thetop24 of the spindle 19.

An internally threaded axial bore 25 (FIG- l)is provided in the top 24of the spindle 19 for accommodating a bolt 26 for maintaining apropeller 27 in position -on the first and second annular members 20 and23. A

washer may be positioned between the head of the bolt 26 and thepropeller 27.

While the invention has been described by means of specific examples andin specific embodiments, I do not wish to be limited thereto, forobvious modifications will occur to those skilled in the art withoutdeparting from the spirit and scope of the invention.

I claim:

1. A propeller positioning device, comprising a table mount comprising abase member of substantially frustoconical configuration having an undersurface substantially perpendicular to the axis thereof and an uppersurface transverse and nonperpendicular to the axis thereof;

a table having a substantially planar upper surface, an

under surface and a substantially frustoconical support me nbercoaxially affixed to the under surface of the table, the support memberhaving a substantially planar under surface transverse to the axis ofthe support member;

rotating means for rotatably mounting the support member on the basemember with the under surface of the support member resting on the uppersurface of the base member and the support member being rotatable aboutan axis of rotation perpendicular to the under surface of the supportmember and the upper surface of the base member so that the tableassumes different inclinations corresponding to the rotation of thesupport member on the base member;

a spindle affixed to the upper surface of the table and extendingperpendicularly therefrom and coaxially with the support member, thespindle accommodating a propeller; and

propeller accommodating means including a first substantiallyfrustoconical annular member coaxially positioned around the base of thespindle, a tubular member coaxially positioned around the spindle andresting on the first annular member and a second substantiallyfrustoconical annular member coaxially positioned around the top of thespindle.

2. A propeller positioning device as claimed in claim 1, wherein theupper surface of the base member is at the same angle with its undersurface as the under surface of the support member is with the uppersurface of the support member.

3. A propeller positioning device as claimed in claim 1, wherein thebase member has an internally threaded pin bore formed therein and therotating means comprises a bore formed in the base member and extendingfrom the upper surface thereof coaxial with the axis of rotation, thepin bore opening into the bore, a substantially cylindrical extensionextending from the under surface of the support member coaxially withthe axis of rotation and rotatably seated in the bore of the basemember, the extension having a circular circumferential groove formedtherein, and an externally threaded pin member threadedly coupled in thepin bore of the 3,773 ,3 1 2 3 4 v base member and abutting theextension in the groove in the top of the spindle for accommodating abolt for formed therein for holding the table in a desired angumaintaining a propeller in position on the first and seclar position. bi g 4. A propeller positioning device as claimed in claim 1, furthercomprising an internally threaded axial bore 5 I U "f f,

0nd annular members.

1. A propeller positioning device, comprising a table mount comprising abase member of substantially frustoconical configuration having an undersurface substantially perpendicular to the axis thereof and an uppersurface transverse and non-perpendicular to the axis thereof; a tablehaving a substantially planar upper surface, an under surface and asubstantially frustoconical support member coaxially affixed to theunder surface of the table, the support member having a substantiallyplanar under surface transverse to the axis of the support member;rotating means for rotatably mounting the support member on the basemember with the under surface of the support member resting on the uppersurface of the base member and the support member being rotatable aboutan axis of rotation perpendicular to the under surface of the supportmember and the upper surface of the base member so that the tableassumes different inclinations corresponding to the rotation of thesupport member on the base member; a spindle affixed to the uppersurface of the table and extending perpendicularly therefrom andcoaxially with the support member, the spindle accommodating apropeller; and propeller accommodating means including a firstsubstantially frustoconical annular member coaxially positioned aroundthe base of the spindle, a tubular member coaxially positioned aroundthe spindle and resting on the first annular member and a secondsubstantially frustoconical annular member coaxially positioned aroundthe top of the spindle.
 2. A propeller positioning device as claimed inclaim 1, wherein the upper surface of the base member is at the sameangle with its under surface as the under surface of the support memberis with the upper surface of the support member.
 3. A propellerpositioning device as claimed in claim 1, wherein the base member has aninternally threaded pin bore formed therein and the rotating meanscomprises a bore formed in the base member and extending from the uppersurface thereof coaxial with the axis of Rotation, the pin bore openinginto the bore, a substantially cylindrical extension extending from theunder surface of the support member coaxially with the axis of rotationand rotatably seated in the bore of the base member, the extensionhaving a circular circumferential groove formed therein, and anexternally threaded pin member threadedly coupled in the pin bore of thebase member and abutting the extension in the groove formed therein forholding the table in a desired angular position.
 4. A propellerpositioning device as claimed in claim 1, further comprising aninternally threaded axial bore in the top of the spindle foraccommodating a bolt for maintaining a propeller in position on thefirst and second annular members.